Yellowing-resistant UV (ultraviolet) antibacterial coating

Abstract

The invention relates to a yellowing-resistant UV (ultraviolet) antibacterial coating. The yellowing-resistant UV antibacterial coating is prepared from the following components in parts by weight: 20to 50 parts of yellowing-resistant additive, 1.5 to 4 parts of natural antibacterial agent, 15 to 20 parts of monomer, 1.2 to 2.5 parts of photoinitiator, 3.5 to 5 parts of flatting agent, and 35 to50 parts of inert solvent, wherein the yellowing-resistant additive consists of acrylic resin and alkyd resin; the natural antibacterial agent is chitosan and/or tea tree essential oil. The yellowing-resistant UV antibacterial coating has the advantages that by adding the yellowing-resistant additive and the natural antibacterial agent into the UV coating, the prepared UV coating has the antibacterial and yellowing-resistant properties, and the yellowing and aging degrading of the coating film under the long-time radiation by ultraviolet rays can be delayed or prevented; the yellowing-resistant additive is compounded by the acrylic resin and the alkyd resin, so that the good yellowing-resistant effect is realized.

Description

technical field [0001] The invention relates to a UV paint, in particular to a yellowing-resistant UV antibacterial paint. Background technique [0002] UV is the English abbreviation for Ultra-Violet Ray. Industrial UV wavelength ranges from 200nm to 400nm. The "UV radiation hardenable material" is hardened by irradiating it with UV. UV coatings can be coated by dip coating, flow coating, paint coating, spin coating, or even vacuum coating, and then cured by ultraviolet photon irradiation to form a film. As the name implies, the curing of UV coatings is inseparable from the irradiation of UV light. UV curing coatings originated in the international coatings market in the 1970s and are a new green technology. Utilize this technology to produce the UV-curable coating, referred to as UV coating. At the end of the 20th century, UV curing coatings became popular in the West, Japan and other places, and they are a kind of coating varieties representing fashion. UV curing co...

AI Technical Summary

Problems solved by technology

[0010] However, after long-term exposure to ultraviolet rays, the coating surface of most UV coatings will have an obvious tendency to change color, and its mechanical properties will decline. , can lead to yellowing and aging degradation of the paint film

[0011] Moreover, most of the current UV coatings have no antibacterial function. For electronic products with high frequency of use such as mobile phones and computers, bacteria are prone to be produced on the surface. Therefore, it is necessary to study a UV antibacterial coating that is resistant to yellowing.